I use this to find key numbers.
I use the numbers in groups
13 low odds
024 low evens
579 high odds
68 high evens
Watch your draw history and you will catch on how they fall.
After you find a group cut the group down if you want to a lesser amount.
heres a sample of my tracking for S.C.
the xs will not post properly but you get the idea
__6_5_9_7_6_0_6_2_7_5_4_6_2_7_4_9_9_4_2_6_7_8_4_0_1_3_1_7_0_8_____
__4_0_5_2_0_9_8_0_7_8_6_0_2_1_7_7_5_1_6_0_1_9_2_7_2_6_8_7_6_4______
__2_4_0_1_5_5_1_5_7_5_6_0_6_5_3_3_3_4_9_1_6_4_4_2_9_6_0_5_7_3______
0___x_x___ x_x___x_______d_______________ x_______x_____x___x______
2_x_____x_______x_________-d___________x_______x_x_x______________
4_x_x_________________x_______x_____-d_______x_-d_____________x____
1_______x_____x_____________x_______x___x_x_______x___x___________
3_____________________________x_x_x_________________-x______-_x_______
5___x_x___x_x___x___d_______x_____x_____________________x___________
7_______x_________t_________x_x_x_________x_____x______-_d_x________
9_____x_____x___________________x_x___x_____x_____x__________________
6_x_______x___x_______-d_x_x___________x_x_x_________-d_____x__________
8_____________x_____x_______________________x_________x_____x_____